abstract air-bubbles air-pockets appearance backgrounds blue bubble bubble-plastic colorful colourful cool cover cushioned cushioning cushioning-material dark firm fitted light perspectives plastic plastic-bubble-technology pool pool-cover protection protective rolled-out shapes sheets spread surface surfaces swimming-pool texture textured textures wallpaper background blended color colored colour coloured curved curves decorative design details glass glassy interconnected interlinked interwoven kaleidoscopic lines liquid liquidy metallic molten patterns rows shape shaped star starfish style symmetrical symmetry thick thin transparent vibrant brown coast coastal coastline contoured contours contrast contrasting edge edged edges geographic green marble marbling angles black christmas decoration linear lined mesh mosaic pointed points stars weave woven checkered checks column columns matrix row square squared squares angled arrows detailed diamond-shapes red tiles wall